78688350 has 72 divisors (see below), whose sum is σ = 227688552. Its totient is φ = 19368000.

The previous prime is 78688333. The next prime is 78688361. The reversal of 78688350 is 5388687.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 78688296 and 78688305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 876 + ... + 12575.

It is an arithmetic number, because the mean of its divisors is an integer number (3162341).

Almost surely, 2^78688350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78688350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113844276).

78688350 is an abundant number, since it is smaller than the sum of its proper divisors (149000202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78688350 is a wasteful number, since it uses less digits than its factorization.

78688350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13482 (or 13474 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 78688350 is about 8870.6454105662. The cubic root of 78688350 is about 428.5190626494.

The spelling of 78688350 in words is "seventy-eight million, six hundred eighty-eight thousand, three hundred fifty".